CN202973316U - Condensation heat recycling and heating device of power plants - Google Patents
Condensation heat recycling and heating device of power plants Download PDFInfo
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- CN202973316U CN202973316U CN 201220722799 CN201220722799U CN202973316U CN 202973316 U CN202973316 U CN 202973316U CN 201220722799 CN201220722799 CN 201220722799 CN 201220722799 U CN201220722799 U CN 201220722799U CN 202973316 U CN202973316 U CN 202973316U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 37
- 238000009833 condensation Methods 0.000 title claims abstract description 29
- 230000005494 condensation Effects 0.000 title claims abstract description 29
- 238000004064 recycling Methods 0.000 title claims abstract 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 239000000498 cooling water Substances 0.000 claims abstract description 65
- 238000010521 absorption reaction Methods 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 27
- 238000010612 desalination reaction Methods 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 abstract description 11
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000009102 absorption Effects 0.000 description 49
- 239000002699 waste material Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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Abstract
The utility model relates to a heat recycling system and discloses a condensation heat recycling and heating device of power plants. The heat recycling system comprises a steam pipeline, a circulating cooling water pipeline and a heating pipeline. The heat recycling system is characterized in that the heating pipeline is divided into a heating network pipeline and a boiler water-feeding pipeline by an absorption heat pump, and the heating network pipeline is delivered to a heating network through a steam-water heat exchanger to form a loop; and the boiler water-feeding pipeline is connected to boiler water. The heat exchanging method of the absorption heat pump can realize recycling condensation heat from the power plants; since an emergent heating system is arranged, waste heat from condensation water of the power plants can be recycled in winter and summer; and the condensation heat recycling and heating device of the power plants has the advantages of high heat energy recycling rate, energy conservation and emission reduction and the like.
Description
Technical field
The utility model relates to a kind of power plant waste heat heat reclamation device, relates in particular to a kind of power plant heat of condensation and recycles and heating plant.
Background technology
The thermal power plant condensation heat enters atmosphere by cooling tower or Air-Cooling Island and forms huge heat-energy losses, is the low main cause of thermal power plant energy use efficiency, not only causes the waste of large energy and water or electricity, has also seriously polluted atmosphere simultaneously.The thermal power plant condensation heat is emptying, is the ubiquitous problem in China and even the world, is waste, is also helpless.Yet along with the development of heat pump techniques, the particularly appearance of large high-temperature water resource heat pump makes the recovery of generating set condensation waste heat will become possibility.
The utility model content
The utility model is difficult to reclaim and the problem of utilizing for the used heat that condenses in prior art, provides a kind of employing heat pump techniques to reclaim power plant condensation heat and heating system.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of power plant heat of condensation is recycled and heating plant, comprise steam pipework, bleed steam pipework, recirculated cooling water pipeline, and heat supplying pipeline, described heat supplying pipeline branches into heat supply network pipeline and boiler feedwater pipeline through after absorption heat pump, the heat supply network pipeline is sent into heat supply network by vapor-water heat exchanger, and forms the loop; The boiler feedwater pipeline connects boiler feedwater.By the dual circuit setting, the heat of condensation that the power plant is reclaimed can be used for the heat supply network heat supply, also can be used as boiler feedwater, effectively improves heat utilization rate, energy savings.
Further, be provided with the demineralized water pipeline in the water return pipeline of described heat supplying pipeline, described demineralized water pipeline comprises sweet-water tank, desalination water pump and demineralized water control valve, and described sweet-water tank connects condensate line.Be that condensate water enters sweet-water tank through the demineralized water pipeline.
Further, described boiler feedwater pipeline is provided with oxygen-eliminating device and control valve d; Described heat supply network pipeline is provided with control valve c.
Winter, very cold, opening controlling valve c, closed control valve d, heat supply network backwater enter the heat supply network pipeline after having absorbed the waste heat of power plant condensate water and cooling water, further heat up through vapor-water heat exchanger, enter a heat supply network heat supply.
Summer, warmer climate need not heat supply, closed control valve c, opening controlling valve d, closed control valve a, ON cycle cooling water control valve, closed control valve and demineralized water control valve, heat supply network backwater have become demineralized water and the condensate water of sweet-water tank, after the waste heat that has absorbed the power plant recirculated cooling water, enter boiler through oxygen-eliminating device, as boiler feedwater.
Contain a large amount of waste heats in circulating cooling water of power plant, heat supplying pipeline reclaims waste heat in circulating cooling water of power plant by absorption heat pump and vapor-water heat exchanger, and then is transported to hot user side or boiler, realizes Waste Heat Recovery utilization and heat supply, improve heat utilization rate, effectively energy savings.
As preferably, the described power plant heat of condensation is recycled and heating plant also comprises and takes out pipeline, and described bleed steam pipework is provided with vapor-water heat exchanger, absorption heat pump, extracted steam from turbine through the vapor-water heat exchanger heat release after, form condensed water and discharge; Bleed steam pipework is provided with control valve a, before being positioned at absorption heat pump, is used for adjusting bleed steam pipework through the steam flow amount size of absorption heat pump; Bleed steam pipework is provided with control valve b, before being positioned at vapor-water heat exchanger, is used for adjusting bleed steam pipework through the steam flow amount size of vapor-water heat exchanger.Described steam-water heat exchanging pipeline improves a hot net water temperature through vapor-water heat exchanger, and offers hot user; Extracted steam from turbine is lowered the temperature through vapor-water heat exchanger, is condensed into condensate water.
Described steam-water heat exchanging pipeline is provided with control valve a and control valve b, before control valve a is positioned at absorption heat pump, is used for adjusting the steam-water heat exchanging pipeline through the steam flow amount size of absorption heat pump by changing aperture; Before control valve b is positioned at vapor-water heat exchanger, is used for controlling by changing aperture the steam flow amount size that enters vapor-water heat exchanger, and then controls the steam use amount of exhaust pipe.
In needs heatings, but temperature is not in very low situation, to open control valve a, closes control valve b, and steam-water heat exchanging pipe device is not had an effect, and after extracted steam from turbine enters the absorption heat pump heat absorption, forms condensed water and discharges; This moment, heat supplying pipeline absorbed heat by absorption heat pump, can make the heat supply network return water temperature be increased to 80-88 C, and the heat supply network backwater after heating enters heat supply network one time through vapor-water heat exchanger.
When weather is cold especially, open control valve a and control valve b, bleeder steam through after absorption heat pump, enters the vapor-water heat exchanger heat release again, and then forms condensed water and discharge; After heat supplying pipeline absorbed heat and heated up by absorption heat pump this moment, enter vapor-water heat exchanger and further heat, can make more than the heat supply network return water temperature is increased to 95 C, the heat supply network backwater after heating enters heat supply network one time, for heat supply.
Control absorption heat pump driving heat source flow by control valve a, change the output water temperature degree of absorption heat pump; Control the heat exchange amount of vapor-water heat exchanger by control valve b, change the temperature of removing a hot net water; The steam of bleed steam pipework is formed condensed water and is discharged after absorption heat pump, vapor-water heat exchanger heat absorption.
As preferably, the cooling water that described recirculated cooling water pipeline makes the circulating cooling pond is got back to later on the circulating cooling pond through circulating cooling water pump, condenser, absorption heat pump and control valve a, forms the loop.By absorption heat pump with the thermal energy transfer in the cooling water circulation pipeline to heat supplying pipeline, improved the utilization rate of heat energy, reach the energy-saving and emission-reduction purpose.
As preferably, the described power plant heat of condensation is recycled and heating plant also comprises standby recirculated cooling water pipeline, the cooling water that described standby recirculated cooling water pipeline makes the circulating cooling pond is got back to later on the circulating cooling pond through circulating cooling water pump, condenser, absorption heat pump, circulating cooling water control valve, cooling tower, forms the loop.Described recirculated cooling water pipeline is provided with control valve a, before being positioned at absorption heat pump.Described standby cooling water circulation pipeline is provided with control valve b, before being positioned at cooling tower.When absorption heat pump can not normally use, closed control valve a, opening controlling valve b, cooling water is without absorption heat pump, but through standby circulation pipe cooling water channel, carries out cool cycles by cooling tower.Guarantee engine work.
As preferably, described recirculated cooling water pipeline has control valve a, between absorption heat pump and circulating cooling pond.Described standby cooling water circulation pipeline is provided with control valve b, before being positioned at cooling tower.
As preferably, the exhaust steam that described steam pipework produces after through the steam turbine acting is delivered to condenser, exhaust steam through condenser with thermal energy transfer to the cooling water in the recirculated cooling water pipeline after solidifying water discharge.
The utility model is realized solidifying recuperation of heat by the heat exchange method of absorption heat pump, reclaim power plant's condensation heat, and be provided with emergent heating system, summer is as boiler feedwater, winter is as heating system, and then heat energy is transported to boiler or hot user side, realizes Waste Heat Recovery utilization and heat supply, improve heat utilization rate, effectively energy savings.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
wherein: 1-steam pipework, 2-recirculated cooling water pipeline, 3-bleed steam pipework, 4-standby recirculated cooling water pipeline, 5-heat supplying pipeline, 6-vapor-water heat exchanger, 7-absorption heat pump, 8-oxygen-eliminating device, 9,-sweet-water tank, 10-desalination water pump, 11-steam turbine, 12-condenser, 21-circulating cooling water pump, 22-circulating cooling pond, 23-control valve a, 31-control valve a, 32-control valve b, 41-cooling tower, 42-control valve b, 43-circulating cooling water control valve, 51-control valve, 52-control valve c, 53-control valve d, 54-demineralized water control valve, 55-demineralized water control valve.
The specific embodiment
Below in conjunction with accompanying drawing 1 and specific embodiment, the utility model is described in further detail:
A kind of power plant heat of condensation is recycled and heating plant, as shown in Figure 1, comprises steam pipework 1, recirculated cooling water pipeline 2, exhaust pipe 3, standby recirculated cooling water pipeline 4 and heat supplying pipeline 5.
The steam of described steam pipework 1 is sent into steam turbine 11 acting, and the exhaust steam of discharging after steam turbine 11 actings are delivered to condenser 12, and exhaust steam condenses into water with thermal energy transfer after to the cooling water in recirculated cooling water pipeline 2 through condenser 12 and discharges.
Described bleed steam pipework 3 is provided with absorption heat pump 7 and vapor-water heat exchanger 6.After steam drive absorption heat pump 7 heat absorptions in bleed steam pipework 3, form condensed water and discharge.Absorption heat pump 7 reclaims the used heat that condenser 12 is discharged recirculated cooling water, offers heat supplying pipeline (heat supply network) 5 after hot net water is heated up; Bleeder steam enters vapor-water heat exchanger 6 heat exchange to heat supplying pipeline (heat supply network) 5, further improves hot net water (heat supply network) water temperature of heat supplying pipeline 5.
Described bleed steam pipework 3 also is provided with control valve a31 and control valve b32, before control valve a31 is positioned at absorption heat pump 7, is used for adjusting the steam flow amount size through absorption heat pump 7; Before control valve b32 is positioned at vapor-water heat exchanger 6, be used for controlling the steam flow amount size that enters vapor-water heat exchanger 6, and then control the steam use amount of bleed steam pipework 3.For different weather conditions, can by the opening-closing size of control valve a31 and control valve b32, control heating load, the heat supply temperature of a constant heat supply network.
In needs heatings, but temperature is not in very low situation, to open control valve a31, closes control valve b32, and vapor-water heat exchanger 6 is not had an effect, and after extracted steam from turbine enters absorption heat pump 7 heat absorptions as driving heat source, forms condensed water and discharges; Heat supplying pipeline 5 by the heat of absorption heat pump 7 absorption cycle cooling waters, can make the heat supply network return water temperature be increased to 80-88 C at this moment, and the heat supply network backwater after heating enters heat supply network one time through vapor-water heat exchanger 6.
When weather is cold especially, open control valve a31 and control valve b32, bleeder steam through after absorption heat pump 7, enters vapor-water heat exchanger 6 heat releases again, and then forms condensed water and discharge; This moment heat supplying pipeline 5 by the heat in absorption heat pump 7 absorption condensation water after, enter vapor-water heat exchanger 6 and further heat, can make more than the heat supply network return water temperature is increased to 95 C, the heat supply network backwater after heating enters heat supply network one time, for heat supply.
The cooling water that described recirculated cooling water pipeline 2 makes circulating cooling pond 22 is got back to circulating cooling pond 22 after through circulating cooling water pump 21, condenser 12, absorption heat pump 7, forms the loop.Cooling water with heat energy passes through absorption heat pump 7 and carries out heat exchange at the interior extraction waste thermal energy of absorption heat pump 7 and heat supplying pipeline 5.By absorption heat pump 7 with the thermal energy transfer in cooling water circulation pipeline 2 to heat supplying pipeline 5, improved the utilization rate of heat energy, reach the energy-saving and emission-reduction purpose.
The present embodiment also comprises standby cooling water circulation pipeline 4, and the cooling water that described standby cooling water circulation pipeline 4 makes circulating cooling pond 22 is got back to circulating cooling pond 22 after through circulating cooling water pump 21, condenser 12, cooling tower 41, forms the loop.Described recirculated cooling water pipeline 2 is provided with control valve a23, after being positioned at absorption heat pump 7.Described standby cooling water circulation pipeline 4 is provided with control valve b42, before being positioned at cooling tower 41.When absorption heat pump 7 can not normally use, closed control valve a23, opening controlling valve b42, cooling water is without absorption heat pump 7, but through standby cooling water circulation pipeline 4, carries out cool cycles by cooling tower 41.Thereby assurance engine work.
The present embodiment also comprises heat supplying pipeline 5, and described heat supplying pipeline 5 branches into heat supply network pipeline and boiler feedwater pipeline through after absorption heat pump 7, and the heat supply network pipeline is sent into heat supply network by vapor-water heat exchanger 6, and forms the loop; The boiler feedwater pipeline connects boiler feedwater; Be provided with the demineralized water pipeline in the water return pipeline of described heat supplying pipeline 5, described demineralized water pipeline comprises sweet-water tank 9, desalination water pump 10, demineralized water control valve 55 and demineralized water control valve 54.Described sweet-water tank 9 connects condensate line.The condensate water that forms after condenser 12 and vapor-water heat exchanger 6 heat releases is sent into sweet-water tank 9.
Described boiler feedwater pipeline is provided with oxygen-eliminating device 8 and control valve d53; Described heat supply network pipeline is provided with control valve c52.
Winter, very cold, opening controlling valve 51, opening controlling valve c52, closed control valve d53 closes demineralized water control valve 54, opening controlling valve 55.After the heat supply network backwater has absorbed the waste heat of power plant condensate water and cooling water through absorption heat pump 7, the water temperature that enters the heat supply network pipeline reaches 80-88 C, further heat up through vapor-water heat exchanger 6 again when cold especially, more than water temperature reaches 95 C, and then offer a heat supply network heat supply.
Summer, warmer climate need not heat supply, closed control valve 51, closed control valve c52, opening controlling valve d53, closed control valve a(23), ON cycle cooling water control valve 43, open demineralized water control valve 54, close demineralized water control valve 55, the condensate water of discharging after condenser 12 and absorption heat pump 7 heat releases passes into sweet-water tank 9.Condensate water enters the heat supply network loop as the water in heat supplying pipeline 5, and after having absorbed the waste heat of power plant condensate water and cooling water through absorption heat pump 7, water temperature reaches 80-88 C, enters the boiler feedwater pipeline, enters boiler through oxygen-eliminating device 8, as boiler feedwater.
Contain a large amount of waste heats in circulating cooling water of power plant, the waste heat that heat supplying pipeline 5 reclaims in circulating cooling water of power plant by absorption heat pump 7, summer is as boiler feedwater, winter is as heating system, and then heat energy is transported to boiler or hot user side, realize Waste Heat Recovery utilization and heat supply, improve heat utilization rate, effectively energy savings.
Above the power plant provided by the utility model heat of condensation is recycled and heating plant is described in detail, for one of ordinary skill in the art, thought according to the utility model embodiment, all will change in specific embodiments and applications, can do respective change according to actual needs.In sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. a power plant heat of condensation is recycled and heating plant, comprise steam pipework (1), recirculated cooling water pipeline (2), and heat supplying pipeline (5), it is characterized in that: branch into heat supply network pipeline and boiler feedwater pipeline after described heat supplying pipeline (5) process absorption heat pump (7), the heat supply network pipeline is sent into heat supply network by vapor-water heat exchanger (6), and forms the loop; The boiler feedwater pipeline connects boiler feedwater.
2. the power plant according to claim 1 heat of condensation is recycled and heating plant, it is characterized in that: be provided with the demineralized water pipeline in the water return pipeline of described heat supplying pipeline (5), described demineralized water pipeline comprises sweet-water tank (9), desalination water pump (10) and demineralized water control valve (54); Described sweet-water tank (9) connects condensate line.
3. the power plant according to claim 1 heat of condensation is recycled and heating plant, and it is characterized in that: described boiler feedwater pipeline is provided with oxygen-eliminating device (8) and control valve d(53); Described heat supply network pipeline is provided with control valve c(52).
4. power plant heat of condensation recycling according to claim 1 and heating plant also comprise bleed steam pipework (3), described bleed steam pipework (3) is provided with vapor-water heat exchanger (6), absorption heat pump (7), after the heat release of extracted steam from turbine process vapor-water heat exchanger (6), form condensed water and discharge; Bleed steam pipework (3) is provided with control valve a(31), be positioned at absorption heat pump (7) before, be used for adjusting bleed steam pipework (3) through the steam flow amount size of absorption heat pump (7); Bleed steam pipework (3) is provided with control valve b(32), be positioned at vapor-water heat exchanger (6) before, be used for adjusting bleed steam pipework (3) through the steam flow amount size of vapor-water heat exchanger (6).
5. the power plant according to claim 1 heat of condensation is recycled and heating plant, it is characterized in that: the exhaust steam that described steam pipework (1) produces after through steam turbine (11) acting is delivered to condenser (12), and exhaust steam condenses into water with thermal energy transfer after to the cooling water in cooling water circulation pipeline (2) through condenser (12) and discharges.
6. the power plant according to claim 1 heat of condensation is recycled and heating plant, it is characterized in that: described recirculated cooling water pipeline (2) makes the cooling water in circulating cooling pond (22) through circulating cooling water pump (21), condenser (12), absorption heat pump (7), control valve a(23) get back to later circulating cooling pond (22), form the loop.
7. the power plant according to claim 1 heat of condensation is recycled and heating plant, it is characterized in that: also comprise standby recirculated cooling water pipeline (4), described standby cooling water circulation pipeline (4) makes the cooling water in circulating cooling pond (22) get back to later circulating cooling pond (22) through circulating cooling water pump (21), condenser (12), absorption heat pump (7), circulating cooling water control valve (43), cooling tower (41), forms the loop.
8. according to claim 4 or 7 any one described power plant heat of condensation recycling and heating plants, is characterized in that: by control valve a(31) control absorption heat pump (7) driving heat source flow, change the output water temperature degree of absorption heat pump (7); By control valve b(32) control the heat exchange amount of vapor-water heat exchanger (6), change the temperature of removing a hot net water; The steam of bleed steam pipework (3) is formed condensed water and is discharged after absorption heat pump (7), vapor-water heat exchanger (6) heat absorption.
9. the described power plant heat of condensation is recycled and heating plant according to claim 1 to 7, and it is characterized in that: described recirculated cooling water pipeline (2) is provided with control valve a(23), be positioned between absorption heat pump (7) and circulating cooling pond (22).
10. the described power plant heat of condensation is recycled and heating plant according to claim 1 to 7, and it is characterized in that: described standby cooling water circulation pipeline (4) is provided with control valve b(42), be positioned at cooling tower (41) before.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722799 CN202973316U (en) | 2012-12-25 | 2012-12-25 | Condensation heat recycling and heating device of power plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722799 CN202973316U (en) | 2012-12-25 | 2012-12-25 | Condensation heat recycling and heating device of power plants |
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| CN202973316U true CN202973316U (en) | 2013-06-05 |
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| CN 201220722799 Expired - Fee Related CN202973316U (en) | 2012-12-25 | 2012-12-25 | Condensation heat recycling and heating device of power plants |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017236A (en) * | 2012-12-25 | 2013-04-03 | 浙江工商大学 | Condensation heat recycle and supply system of power plant |
| CN108826339A (en) * | 2018-06-12 | 2018-11-16 | 双良节能系统股份有限公司 | It is a kind of white plume administer and energy recycling system and its method |
| CN112283697A (en) * | 2020-11-05 | 2021-01-29 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Combined with absorption heat pump, direct air cooling unit cold end exhaust steam waste heat utilization system |
| CN114739734A (en) * | 2022-04-11 | 2022-07-12 | 华能左权煤电有限责任公司 | Device of unit soda sampling frame recovery water |
-
2012
- 2012-12-25 CN CN 201220722799 patent/CN202973316U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017236A (en) * | 2012-12-25 | 2013-04-03 | 浙江工商大学 | Condensation heat recycle and supply system of power plant |
| CN103017236B (en) * | 2012-12-25 | 2015-08-05 | 浙江工商大学 | The power plant heat of condensation is recycled and heating system |
| CN108826339A (en) * | 2018-06-12 | 2018-11-16 | 双良节能系统股份有限公司 | It is a kind of white plume administer and energy recycling system and its method |
| CN112283697A (en) * | 2020-11-05 | 2021-01-29 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Combined with absorption heat pump, direct air cooling unit cold end exhaust steam waste heat utilization system |
| CN114739734A (en) * | 2022-04-11 | 2022-07-12 | 华能左权煤电有限责任公司 | Device of unit soda sampling frame recovery water |
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